The output voltage of a transformer connected to 220v

I have a circuit that uses three-phase electric power (without neutral). There is an old transformer in this circuit (see image). It converts 220-440 V to 24 V. The input has the handwritten numbers "0", "220", "240", "380", "415", and "440" on it. Two cables, L1 and L3, are connected to "0" and "380". I want to use this transformer in a circuit with single-phase electric power. Should I use the same wiring at "0" and "380" for N and L? What do the numbers actually mean? Obviously they are voltages, but is there any guide for different wirings? That looks like it has a tapped primary and you connect the input voltage between '0' and whichever of the taps matches your input voltage. Changing the tap changes the turns ratio between the primary and secondary, which changes the voltage ratio. For example using the 440 tap will include twice as many turns as the 220 tap. Be careful around it when it's connected as all of the primary terminals will have voltage on them, and the voltage can be rather high because the primary side will also act as an autotransformer. If you connect the correct voltage to any of the taps the others will all have around the voltage they are marked as on them and you can get a nasty shock if you touch one. The transformer in your picture appears to be Italian and appears to be designed to cover both phase to neutral and phase to phase connection on a variety of supplies found historically in Europe. As Justme has explained the primary of the transfor...

Today I received a preheat bed I turned it off, unplugged, I left the capacitors to drain and finally I attempted opening it after it cooled. It turned out the transformer was rated for 110V 60Hz. I have two questions: • Is there any chance that the components beyond the transformer have fried? From a visual inspection, everything looked ok on the single PCB this device has. • What transformer should I use to replace this one to be able to power the device with standard European 220V? Update: I noticed that the board is not only hooked to DC (from the transformer), but also to AC. Here's a picture: • 1 is the heating element • 2 is the AC in • 3 is the DC in Note that the capacitor at the right of the DC in is rated at 25V and all the other capacitors are rated 16V As required by a top user, I posted a picture of the wiring for the heating element. It seems it's wired in series already. This device is basically a temperature controller with a sensor (thermocouple or thermistor most likely), a control circuit, and a triac-controlled mains heater. The unit is powered from a control transformer. Such a transformer will output considerably less than double output voltage if the input voltage is doubled, because they're run fairly close to saturation. That's why the transformer failed, because it saturated. Given the nature of the other components and ratings, there's a fairly good chance that the rest of the circuitry is okay. So replacing the transformer with a 110VAC:9VAC 8V...

This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer See Answer See Answer done loading Question:The primary (220V side) of a 220/6 V, 50Hz transformer is connected to 110 V, 60Hz source. The secondary output voltage will be 3.6 V 3.0v 2.5 V 1.667 V

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Even though I have already seen the theory behind transformers, at that age I didn't really know what was going on and probably missed this explanation. When you connect a load in parallel with an Active Independent Voltage source (If I'm correct) if you increase the voltage of the source the power drawn by the load will increase as well (since the current increases). Now, if you connect a load to the output of a transformer which is a passive component, I've been told that the more you step up the voltage the current will automatically go down so S = VI (all in magnitudes) remains intact. I was told that in the power transmission lines course. Question 1: If this is true, then for a known fixed load, If I connect it to a 400V, 200V, or 500V transformer output, it will draw exactly the same S? Or maybe it will draw the same P but a different Q? Question 2: If this is true, how does the input voltage (transformer's output voltage) affect the load? A:"The power drawn is only dependent on the load". This is what I've been told... B: But I believe that "The power drawn, depends on the load and its input voltage". available current reduces. However, it you take an already-existing transformer, and increase the primary voltage, the secondary voltage will also increase, as will the current taken by the load (assuming that the load is passive), so the power increases. The secondary voltage appears as a voltage source of Vp/n (where Vp is the primary voltage and n is the turns rati...